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Offline Markymark11

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Torque Setting Top Engine Bolt
« on: December 24, 2018, 08:07:33 AM »
I have fitted R&G Aero Crash bungs which attach at the top engine mounts. On the R&G literature it states do not tighten more than 40nm. As I understand it that bolt is 60nm according to my searches on here. Without going into a debate about crash bungs or crash bars and whether they are the right thing to fit ..does any one who has crash bungs know if it is OK to tighten them to 60nm. I have also read threads that say it is a good thing to go round and torque check all your engine bolts as it helps with the vibration issue - I have left them at 40nm at the moment without thread lock ...any thoughts ? :002:
« Last Edit: December 24, 2018, 08:08:25 AM by Markymark11 »

Offline Markymark11

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Re: Torque Setting Top Engine Bolt
« Reply #1 on: December 24, 2018, 09:17:26 AM »
Edit - I sent an email to R&G and they very kindly replied very quickly -  their answer was as follows :      ??

Hi Mark,

The max torque setting for our bolt is 40nm as they are a soft grade metal

Kind Regards


Not sure that is a massive help -  I could apply thread lock which will add torque but who knows how much - or buy better bolts ...not really a very satisfactory answer hmmm. I decided to return them for a full refund as "not fit for purpose" and have ordered Evotech ones which state normal manufacturers torque settings.
« Last Edit: December 24, 2018, 10:44:37 AM by Markymark11 »

Online Bree

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Re: Torque Setting Top Engine Bolt
« Reply #2 on: December 24, 2018, 01:15:22 PM »
I would have done exactly the same, and returned them. If the manual states that these engine mounts should be 60nm. Then it is for a reason. 
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Online otrp

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Re: Torque Setting Top Engine Bolt
« Reply #3 on: December 24, 2018, 02:37:29 PM »
*Originally Posted by Bree [+]
I would have done exactly the same, and returned them. If the manual states that these engine mounts should be 60nm. Then it is for a reason.

+1.

Offline Markymark11

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Re: Torque Setting Top Engine Bolt
« Reply #4 on: December 24, 2018, 03:34:26 PM »
To be honest I was pretty unimpressed with R&G, they obviously don't check the manufacturers specifications for each bike, which must bring into question how many of their products are fitted to bikes everywhere with incorrect torque settings ?

Offline JTL

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Re: Torque Setting Top Engine Bolt
« Reply #5 on: December 27, 2018, 09:30:33 AM »
Also, the S1000XR engine is used as stressed member part of the frame, I think.  So bolt strength and torque would be important.

Offline smithy

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Re: Torque Setting Top Engine Bolt
« Reply #6 on: December 27, 2018, 09:26:41 PM »
*Originally Posted by JTL [+]
Also, the S1000XR engine is used as stressed member part of the frame, I think.  So bolt strength and torque would be important.

Quite correct.. :028:

Smithy.
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